so just to be clear, you are running 1993 stock injectors with a 1994-1995 harness and ecm?

this is important; as the stock '93 injectors are 22lb, but the '95 pcm is set up for 24lb injectors by default. add some extra fuel pressure and you're going to be way out to lunch.

but it should be running lean, not rich!

the stock injector constant assumes 43.5lbs tops, you're hitting 50lbs. this is max, without any vacuum to the regulator.

so you adjust for fuel pressure using sqrt(actualpressure/ratedpressure)*injectorsize. that gives you sqrt(50/43.5)*24=25.73

what is your injector constant right now anyway?